export function parseTime(time, cFormat) {
  if (arguments.length === 0) {
    return null
  }
  if (time === null) {
    return null
  }
  // 根据time创建Date对象
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if (('' + time).length === 10) {
      time = parseInt(time) * 1000
    }
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  // 按照格式格式化时间
  let format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  format = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    let value = formatObj[key]
    if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
    if (result.length > 0 && value < 10) {
      value = '0' + value
    }
    return value || 0
  })
  return format
}

export function downloadExcel (data, fileName) {
  let blob = new Blob([data], {type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'})
  let objectUrl = URL.createObjectURL(blob)
  const link = document.createElement('a')
  link.href = objectUrl
  link.download = fileName
  link.click()
  URL.revokeObjectURL(objectUrl)
}
